Yealink SIP-T2 SERIES Administrator's Manual page 384

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Web User Interface:
Features->General Information->RFC 2543 Hold
Phone User Interface:
None
To configure call hold tone and call hold tone delay via web user interface:
1. Click on Features->General Information.
2. Select the desired value from the pull-down list of Play Hold Tone.
3. Enter the desired time in the Play Hold Tone Delay field.
4. Click Confirm to accept the change.
To configure call hold method via web user interface:
1. Click on Features->General Information.
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Parameters Permitted Values Default